/usr/share/pyshared/burnlib/audio.py is in burn 0.4.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# burnlib/audio.py
#
# Copyright © 2009 Ben Finney <ben+python@benfinney.id.au>.
# Copyright © 2003–2009 Gaetano Paolone <bigpaul@hacknight.org>.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA.
""" Functionality for working with audio files.
"""
import os.path
import ogg.vorbis
import eyeD3
import mad
class FileInfo:
""" Grab as much info as you can from the file given.
Reads time, tags, title, artist, and more from file.
"""
def __init__(self, fullpath):
""" Set up the file information from the specified path. """
base, ext = os.path.splitext(fullpath)
if ext.lower() == '.ogg':
fileinfo = OggInfo(fullpath)
self.__dict__.update(fileinfo.__dict__)
self.fileinfo = fileinfo
else:
tag = eyeD3.Tag()
tag.link(fullpath)
self.artist = tag.getArtist()
self.title = tag.getTitle()
self.album = tag.getAlbum()
fileinfo = mad.MadFile(fullpath)
self.total_time = fileinfo.total_time() / 1024
self.bitrate = fileinfo.bitrate() / 1000
self.fileinfo = fileinfo
self.duration = compute_duration(self.total_time)
def read(self):
""" Read and return the file information. """
return self.fileinfo.read()
class OggInfo:
"""Extra information about an Ogg Vorbis file.
Uses ogg-python and vorbis-python from http://www.duke.edu/~ahc4/pyogg/.
Patch from Justin Erenkrantz <justin@erenkrantz.com>
"""
def __init__(self, name):
# Setup the defaults
self.valid = 0
self.total_time = 0
self.samplerate = 'unkown'
self.bitrate = 'unkown'
self.mode = ''
self.mode_extension = ''
self.title = ''
self.artist = ''
self.album = ''
self.year = ''
self.genre = ''
self.vendor = ''
self.track = ''
self.comment = ''
self.transcoded = ''
# Generic File Info
fileogg = ogg.vorbis.VorbisFile(name)
ogg_comment = fileogg.comment()
ogg_info = fileogg.info()
self.fileogg = fileogg
# According to the docs, -1 means the current bitstream
self.samplerate = ogg_info.rate
self.total_time = fileogg.time_total(-1)
self.bitrate = fileogg.bitrate(-1) / 1000
self.filesize = fileogg.raw_total(-1)/1024/1024
# recognized_comments = ('Artist', 'Album', 'Title', 'Version',
# 'Organization', 'Genre', 'Description',
# 'Date', 'Location', 'Copyright', 'Vendor')
for key, val in ogg_comment.items():
if key == 'TITLE':
self.title = val
elif key == 'ARTIST':
self.artist = val
elif key == 'ALBUM':
self.album = val
elif key == 'DATE':
self.year = val
elif key == 'GENRE':
self.genre = val
elif key == 'VENDOR':
self.vendor = val
elif key == 'TRACKNUMBER':
self.track = val
elif key == 'COMMENT':
self.comment = val
elif key == 'TRANSCODED':
self.transcoded = val
self.valid = 1
def read(self):
""" Read and return the file information. """
return self.fileogg.read()
def file_duration(audio_file):
""" Return audio duration in seconds from specified audio file. """
seconds = 0
if os.path.exists(audio_file) and os.path.isfile(audio_file):
info = FileInfo(audio_file)
seconds = seconds + int(info.total_time)
return seconds
else:
return -1
def compute_duration(seconds):
""" Return duration string for duration in seconds.
Will return the appropriate format for the duration:
* "H:MM:SS" for durations one hour or more
* "M:SS" for durations one minute or more
* "0:SS" for durations less than one minute
"""
seconds_per_hour = 3600
minutes_per_hour = 60
seconds_per_minute = 60
if seconds >= seconds_per_hour:
duration = '%d:%02d:%02d' % (
int(seconds / seconds_per_hour),
int(seconds / seconds_per_minute) % minutes_per_hour,
int(seconds) % seconds_per_minute)
elif seconds >= seconds_per_minute:
duration = '%d:%02d' % (
int(seconds / seconds_per_minute),
int(seconds) % seconds_per_minute)
else:
duration ='0:%02d' % int(seconds)
return duration
# Local variables:
# mode: python
# coding: utf-8
# End:
# vim: filetype=python fileencoding=utf-8 :
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